Alice had stayed late after school to put the finishing touches on her art sculpture, a bust of a gargoyle's head. She'd been having trouble with the project, so it was a relief to finally have it done.
She tucked her brown hair beneath her bandana and slung her backpack over her shoulders, ready to go home.
Suddenly, she heard a scratching sound from somewhere in the room, as if something heavy and clawed were scraping across the ground. Scared, she took off at a jog down the hall.
She rounded a corner, thinking she'd lost it--whatever it was--and stopped to take a breath, unaware that a green four-legged, headless monstrosity was sneaking up behind her.
It charged, ramming it's thick, stubby phallus neck into her abdomen and bounded with her through the school, out the doors and into the surrounding wounds at a speed that left Alice disoriented and screaming.
It stopped in a small clearing and tossed her to her knees. Before Alice could catch her breath, she felt something moist and warm tear effortlessly through her jeans and penetrate her sex. The thing had impaled her with its thick neck and slowly raised her up onto where its shoulders should have been. Alice screamed. It was painful, but strangely only for a moment before a powerful euphoria overcame her body.
She writhed rhymthically atop the creature's peculiar, thrusting member. Now aroused beyond belief, she ran her hands against her breasts, opening her shirt and exposing her breasts, erect nipples glistening in the moonlight. Her jeans split and tore off and her sandals fell off of her clenching and unclenching toes.
Finally, the creature seemed to ejaculate something into--but it wasn't just a fluid--it felt like a mass of tendrils. Alice orgasmed as the creature continued its strange rutting with her. She felt herself begin to change.
Her legs began to fuse into the body of the creature, joining with its own forelegs. Small cavities opened atop its feet and her slipped her own into them like shoes. The cavity closed tightly around her ankles and she felt the creatures claws fuse into her toes. Her legs and its forelegs were now one. She also became aware of unfamiliar sensations. She could feel--and manipulate the creature's hind legs and tail.
The changes spread upward. Her abdomen tightened to an athletic build just before her torso began to turn the same shade of green as the creature. It lengthened as well, allowing her a greater amount of flexibility at the waist. Her breasts firmed and expanded and her nipples excreted a green fluid. Her spine became bony, protruding and reinforce and her fingertips sprouted enormous talons.
She moaned in pleasure, her voice growing deep and demonic, as her teeth morphed into fangs and her facial features became more angular. Her ears pointed and a pair of enormous, foreward-pointing horns erupted from her forehead. Her thoughts turned to wickedness as she orgasmed a second time, this both she and the creature--now one--shuddered in pleasure. A mass of tentacles erupted and then retracted from the beast's two vaginas--one where Alice's had been and the other at the creature's groin.
Alice the demontaur cackled evilly and set off to join her sisters.